When to use this guide
- Designing toilet accommodation in a non-dwelling within scope
- Reviewing a relevant material change of use
- Coordinating universal, ambulant and other toilet layouts with accessibility
What to check
Use these prompts with the responsible project team. Ticking a box does not certify compliance.
You can tick these prompts while reviewing the project.
Keep these records
- Toilet strategy and coordinated layouts
- Relevant scope/exemption and design decisions
- Installation and change records
Common mistakes
- Treating Part T as the rule for bathrooms inside dwellings.
- Assuming compliance with T alone settles access and sanitary-provision requirements.
When to get specialist help
Obtain competent design and access advice if scope, exemptions or the layout strategy are uncertain. Use the actual official tables, not a reconstructed third-party copy.
Scope and edition
2024 document effective 1 October 2024 subject to transition, corrected 1 October 2024 and revised 3 November 2025 for minor changes to tables 4.1 and 6.1. Confirm scope, exemptions and project transition before specifying. Do not present Part T as a dwelling standard. Read alongside Part M accessibility requirements and Part G sanitary provision.
Layout of universal toilets, ambulant toilets and toilet cubicles in applicable new non-dwellings and material changes of use.
Use the official source to check the current text, amendments not yet incorporated, commencement and project-specific transition. A published future edition is not automatically the rule applying to your work.
Official sources
- GOV.UK — Approved Document TOfficial England guidance; check the applicable volume, edition and transition.https://www.gov.uk/government/publications/toilet-accommodation-approved-document-t
- Part T: circular 02/2024, applicability and transitionshttps://www.gov.uk/government/publications/the-building-amendment-england-regulations-2024-part-t-circular-022024
Source links lead to external official websites. We provide original explanatory notes and do not reproduce paid standards.
About this library
Independent, plain-English reference notes by Saeed Azarshab. The library covers the 42 subjects listed here; it is not every law affecting construction, an official government publication or a project-specific compliance decision. Building Regulations, Approved Documents, workplace safety duties and planning permissions have different roles.
Editorial source review: . Check the current official text, commencement dates, outstanding amendments and transitional arrangements before relying on a requirement. Publication date is not necessarily the date a rule applies. A relevant competent professional or authority must resolve project-specific questions.
Sources and lawful reuse
Contains public sector information licensed under the Open Government Licence v3.0, except where otherwise stated. These are original practical summaries, with links to the official material. No government endorsement is implied. We do not host copies of proprietary BS, ISO or Eurocode standards, third-party diagrams or publisher layouts. Check each source’s rights notice before reuse.
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